Legal claims defining the scope of protection, as filed with the USPTO.
2. The method of claim 1, further comprising encoding both the LBP-TLV and the NBP-TLV in a modified open shortest path first (OSPF) message.
3. The method of claim 1, wherein the link is a critical link.
4. The method of claim 1, wherein the link is not a critical link.
5. The method of claim 1, wherein the node is a critical node.
6. The method of claim 1, wherein the node is not a critical node.
8. The method of claim 1, wherein the backup paths opaque LSA and flooding topology opaque LSA supports one of open shortest path first version 2 (OSPFv2) and open shortest path first version 3 (OSPFv3).
9. The method of claim 1, wherein the flooding is initiated by a leader node of an area, and wherein the backup paths opaque LSA is flooded to all other nodes in the area.
11. The method of claim 10, wherein the backup path for each link connected to the node is temporarily added to the flooding topology when there is no path on the flooding topology from the node to a remote end node of the link.
13. The network device of claim 12, wherein the processor is further configured to execute the instructions to encode both the LBP-TLV and the NBP-TLV in a modified open shortest path first (OSPF) message.
14. The network device of claim 12, wherein the link is a critical link.
15. The network device of claim 12, wherein the link is not a critical link.
16. The network device of claim 12, wherein the node is a critical node.
17. The network device of claim 12, wherein the node is not a critical node.
19. The network device of claim 18, wherein flooding of the flooding topology is initiated by a leader node of an area, and wherein the backup paths opaque LSA is flooded to all other nodes in the area.
20. The network device of claim 18, wherein the backup paths opaque LSA and flooding topology opaque LSA supports one of open shortest path first version 2 (OSPFv2) and open shortest path first version 3 (OSPFv3).
22. The network node of claim 21, wherein the backup path for each link connected to the node is temporarily added to the flooding topology when there is no path on the flooding topology from the node to a remote end node of the link.
23. The method of claim 1, wherein the determining the flooding topology following detection of the network failure is performed by a network router.
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November 7, 2023
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